Load
Figure 1: Coordination Options - Load
These options control how coordination is handled for single loads.
Option | Description |
---|---|
Set LTPU to |
Select the type of load current calculation to use to set LTPU. The following choices are available:
|
Set STPU to |
Select one of the following STPU settings when coordinating with a single load: Min, Medium, or Max. |
Set INST to |
Select one of the following INST settings when coordinating with a single load: Min, Medium, or Max. |
Option | Description |
Relay Minimum Time Gaps |
The time gap between two protective devices is to ensure selective coordination. It is dependent on the combination of devices. The spreadsheet lists different combination of protective devices consisting of induction disk (ID) and solid state (SS) relays, fuses and LV breakers. The minimum time gap is sum of the Overtravel, Safety Margin, auxiliary and breaker opening time. |